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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5140) Too many safemode monitor threads being created in the standby namenode causing it to fail with out of memory error
Date Fri, 30 Aug 2013 13:15:24 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13754667#comment-13754667
] 

Hudson commented on HDFS-5140:
------------------------------

FAILURE: Integrated in Hadoop-Hdfs-trunk #1507 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/1507/])
HDFS-5140. Too many safemode monitor threads being created in the standby namenode causing
it to fail with out of memory error. Contributed by Jing Zhao. (jing9: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1518899)
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java

                
> Too many safemode monitor threads being created in the standby namenode causing it to
fail with out of memory error
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-5140
>                 URL: https://issues.apache.org/jira/browse/HDFS-5140
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: ha
>    Affects Versions: 2.1.0-beta
>            Reporter: Arpit Gupta
>            Assignee: Jing Zhao
>            Priority: Blocker
>             Fix For: 2.1.1-beta
>
>         Attachments: HDFS-5140.001.patch, HDFS-5140.002.patch
>
>
> While running namenode load generator with 100 threads for 10 mins namenode was being
failed over ever 2 mins.
> The standby namenode shut itself down as it ran out of memory and was not able to create
another thread.
> When we searched for 'Safe mode extension entered' in the standby log it was present
55000+ times

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